 According to both Zhang Jun Feng and He Kecai, Wu Mengxia was their senior brother under Gao Yisheng and shared much information on Gao Bagua theory with them.This branch survived quietly via the Bi family in Beijing after Wu Mengxia was imprisoned during the Communist assumption of power.The Gao style system is referred to as the Gao Yisheng branch of the Cheng Tinghua system of Baguazhang.